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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE
Rivista di Medicina Interna e Farmacologia
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Gazzetta Medica Italiana Archivio per le Scienze Mediche 2016 December;175(12):528-35
Unilateral horizontal and lateral jump performances are associated with the competitive level of collegiate soccer players
Toru AOKI, Yohei TAKAI, Yasuhide YOSHITAKE, Hiroaki KANEHISA
National Institute of Fitness and Sports, Kanoya, Japan
BACKGROUND: This study examined hypothesis that unilateral horizontal (forward) and lateral jumps can be a convenient test for discriminating the competitive level of collegiate male soccer players.
METHODS: Thirty-one players were recruited from a collegiate soccer team and were allocated to regulars (N.=15) or non-regulars (N.=16) on the basis of their participation in matches, whose morphological and body composition variables were similar in the two groups. The performances of unilateral jumps for vertical, horizontal, lateral-inside and lateral-outside directions were determined. In addition, power output in unilateral leg extension was also measured using an isovelocity dynamometer at a preset velocity of 0.8 m/s. In the two groups, leg extension power and jump performances had no significant lateral dominance.
RESULTS: There were no significant differences between the regulars and non-regulars in the leg extension power and vertical jump height. However, the distances of horizontal and lateral jumps were significantly greater in the regulars than in the non-regulars. For the non-regulars, the leg extension power was significantly associated with the scores of the vertical (r=0.596, P<0.05) and horizontal (r=0.623, P<0.05) jumps. For the regulars, however, only the association between the vertical jump height and leg extension power was significant (r=0.594, P<0.05).
CONCLUSIONS: Thus, the current results supported hypothesis and highlight an importance of training for improving the power generation capability of the lower body to horizontal and lateral directions rather than vertical direction in collegiate soccer players.